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Did you know?
The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
Did you know?
Your heart beats over 36 million times a year.
Did you know?
Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.
Did you know?
Blood is approximately twice as thick as water because of the cells and other components found in it.
Did you know?
Asthma cases in Americans are about 75% higher today than they were in 1980.